Jazz is no more just American. It is a world wide phenomenon.
It does not disapeared , it metamorphosed itself because it is a deep language able to be spoken on many levels..
Jazz was a caterpillar in the beginning so beautiful it was. it became a butterfly...
Now no musicians on earth can ignore jazz...None...
The fact that consumers dont buy jazz a lot is like lamenting that most readers dont read Dante or Rabelais or Dostoievsky... They need an education...
Who buy choral works from the Franco Flemish school ? It is so deeply genius words fail... But without education no one will discover it...